"Most notably, security and predictability have become synonymous with private clouds. Security is a big reason to adopt private clouds because they limit access to a single organization, reducing many data security and compliance concerns. But companies also turn to the private cloud to support some workloads that may run more cost-effectively than in public clouds. Estimates from experts such as Steve Kaplan, VP of Customer Success Finance at Nutanix, who authored The ROI Story: A Guide for IT Leaders, indicate that more predictable workloads can run on-premises for about half the cost of a public cloud solution-or even less. However, managing private cloud costs is still a thorny challenge for enterprises..."